Home / 102,131.72-153,163.56-42,956.36

Finding the Fourth Proportional to 102,131.72, 153,163.56 and 42,956.36

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Solution

The fourth proportional to 102,131.72, 153,163.56 and 42,956.36 is: 64,420.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,131.72 : 153,163.56 = 42,956.36 : x
  2. Step 2: Convert to fraction form
    102,131.72/153,163.56 = 42,956.36/x
  3. Step 3: Cross multiply
    102,131.72x = 153,163.56 × 42,956.36
  4. Step 4: Simplify right side
    102,131.72x = 6,579,349,022.24
  5. Step 5: Solve for x
    x = 6,579,349,022.24/102,131.72
  6. Step 6: Final answer
    x = 64,420.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.